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Double acting hollow hydraulic jack

Double-acting hollow hydraulic jack is suitable for high-tonnage lifting operations, and requires high-precision control of object lifting and maintenance operations. In the tunnel pipe horizontal displacement installation, Double acting hollow hydraulic jack hydraulic reset design can quickly and effectively retract the piston to its original position, ready to advance the next pipe.

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The carrying capacity of the double-acting hollow hydraulic jack should be greater than 1.2 times the gravity of the weight; the minimum height of the hydraulic jack is suitable. For the convenience of taking out, the minimum height of the double-acting hollow hydraulic jack should be adapted to the clearance at the bottom of the weight. When the bolster supports heavy objects during the landing, the lifting height of the hydraulic jack is greater than the sum of the ties and the occipital deformation.

350 ton hydraulic ram jack
350 ton hydraulic ram jack

If multiple double-acting hollow hydraulic jacks are used to lift the same equipment, the same type of double-acting hollow hydraulic jack should be used, and the sum of the additional lifting weight of each hydraulic jack should not be less than 1.5 times the gravity of the equipment.

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